Usually the general rule is to charge 2-3X whatever the ammount your spending is. Also, I NEVER give disks with any of my photography. I offer professional print services to my customers and to sell a disk to them so they can go get my pictures printed at wal-mart only hurts me as a photographer when other people see the quality of the prints. Thus...I never sell cds unless they're spending a ton of money and it's a wedding.